Our school is having a sports meeting. Someone ______ here already.
A. arrived B. have arrived C. has arrived
_______ Peter is old and weak, he still has to work.
| A．But | B．Even though | C．So | D．Because of |
The windows must _________ before you leave the room.
| A．be closed | B．are closed | C．close | D．be close |
I am very sad that I ______ many chances in the last few years.
| A．miss | B．missed | C．have missed | D．am missing |
—Must we clean the classroom now?
—No ,you _______.
| A．must | B．needn’t | C．aren’t | D．mustn’t |
—____________?
—Very well, thanks.
| A．How are you |
| B．How do you do |
| C．Where are you |
| D．What are you doing |